EP 3109987 B1 20210428 - ACTIVE COMMON MODE FILTER DEVICE
Title (en)
ACTIVE COMMON MODE FILTER DEVICE
Title (de)
AKTIVES GLEICHTAKTFILTER
Title (fr)
DISPOSITIF DE FILTRE DE MODE COMMUN ACTIF
Publication
Application
Priority
EP 15306018 A 20150626
Abstract (en)
[origin: EP3109987A1] A common mode filter device (2) comprises two LC-filters (21, 22) which are serially connected, two transformers (23, 25) and an active current control circuit (24). The transformers are dedicated to sensing a common mode current and injecting compensation currents driven by the current control circuit. The transformers provide electric isolation between the current control circuit and power-transferring connections of the common mode filter device. Continuing operation of an electrical apparatus which is power-supplied through the common mode filter device is also ensured in case of failure of the current control circuit, with the LC-filters still producing partial common mode filter function.
IPC 8 full level
CPC (source: CN EP US)
H02M 1/12 (2013.01 - CN EP US); H02M 1/15 (2013.01 - EP); H03H 7/0115 (2013.01 - US); H03H 7/0138 (2013.01 - US); H02M 1/123 (2021.05 - CN EP US)
Citation (examination)
- US 2011317455 A1 20111229 - AZUMA SATOSHI [JP], et al
- ADOLF SCHWAB, WOLFGANG KÜRNER: "Elektromagnetische Verträglichkeit", 31 December 2011, SPRINGER VERLAG, ISBN: 978-3-642-16609-9, pages: 168 - 175
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3109987 A1 20161228; EP 3109987 B1 20210428; CN 107810594 A 20180316; CN 107810594 B 20200214; JP 2018511287 A 20180419; JP 6485662 B2 20190320; US 10476464 B2 20191112; US 2018123543 A1 20180503; WO 2016208762 A1 20161229
DOCDB simple family (application)
EP 15306018 A 20150626; CN 201680036819 A 20160620; JP 2016068936 W 20160620; JP 2017544363 A 20160620; US 201615572276 A 20160620